The official gig bag fits the Spark 40 amp perfectly, featuring a water-resistant exterior and padded interior. Take Spark on the go with the official Spark Traveler Bag by Positive Grid. Featuring a water-resistant exterior, a heavily padded interior, durable carrying handles, a removable shoulder strap, and a front zipper compartment for other accessories, this gig bag keeps your Spark safe no matter where you take it. Fits Spark Perfectly. This gig bag fits the Spark amp s dimensions perfectly without any modifcation. Keep Your Spark Safe. Traveler bag features a water-resistant polyester exterior with heavily padded interior, durable carrying handles, and a removable shoulder strap. Fit More. Gig bag also features a front zipper compartment for power adapter, cables, and other accessories.